Segmental torch tip for mixing and combustion of gases

ABSTRACT

A segmental torch tip for mixing and combustion of gases whereby a plurality of segments are coupled together in fluid-tight relationship to provide a torch tip of variable size and shape. Each torch tip segment is provided with a plurality of gas passages that may be coupled in fluid-tight relationship with gas passages of each of the other segments, and the gases are supplied to the torch tip from sources via connections coupled to only one of the segments. A plurality of gas jet apertures are provided in fluid communication with the gas passage in each segment to permit mixing and combustion of the gases as they escape from the torch tip, and each of the segments may have one cross section of trapezoidal shape so that the torch tip forms an arc to permit concentration of flame and heat in a predetermined area.

United States Patent [4 1 Sept. 12, 1972 Futerko [54] SEGMENTAL TORCH TIP FOR MIXING AND COMBUSTION OF GASES [72] Inventor: William J. Futerko, 19 Greenwood Ave., Butler, NJ. 07405 [22] Filed: Aug. 16, 1971 21 App1.No.: 171,998

[52] U.S. Cl. ..239/424.5, 239/557, 239/558 [51] Int. Cl. ..B05b 7/06 [58] Field of Search....239/405, 424.5, 557, 558, 559

[56] References Cited UNITED STATES PATENTS 1,670,191 5/1928 Deck ..239/557 X 1,839,366 1/1932 Alig ..239l559 2,054,601 9/1936 Jenkins ..239/424.5 2,337,240 12/1943 Harper et al ..239/558 2,544,603 3/1951 Lamar et a]. ..239l559 2,633,908 4/1953 Brierly.....' ..239/558 3,118,758 l/l964 Ross ..239/424.5 3,204,682 9/1965 Teleshefsky et a1. ...239/424.5

Pn'mary Examiner-Lloyd L. King Attorney-Marcus B. Finnegan et a].

[57] ABSTRACT A segmental torch tip for mixing and combustion of gases whereby a plurality of segments are coupled together in fluid-tight relationship to provide a torch tip of variable size and shape. Each torch tip segment is provided with a plurality of gas passages that may be coupled in fluid-tight relationship with gas passages of each of the other segments, and the gases are supplied to the torch tip from sources via connections coupled to only one of the segments. A plurality of gas jet apertures are provided in fluid communication with the gas passage in each segment to permit mixing and combustion of the gases as they escape from the torch tip, and each of the segments may have one cross section of trapezoidal shape so that the torch tip forms an arc to permit concentration of flame and heat in a predetermined area.

15 Claims, 8 Drawing Figures PATENTEB 2 I972 3.690.564

sum 1 or 4 INVENTOI WILLIAM J. FUTERKO INVENTO- WILLIAM J. FUTERKO ATTOINEYS PATENTEDSEP I 2 an SEGMENTAL TORCH TIP FOR MIXING AND COMBUSTION OF GASES This invention relates to torch tips and more particularly to a segmental torch tip for mixing and combustion of gases.

Torch tips of various types and configurations have been known and used to perform different functions, and although these torch tips have served the purpose, they have not proved entirely satisfactory under all conditions of service. For example, many of the prior art torch tips have required the use of a large number of parts to form the necessary gas and cooling passages. This use of a plurality of parts has resulted in high cost to manufacture and repair. In addition, many of the prior an torch tips are formed by casting, machining and soldering parts together to form separate passageways for the gases. This also results in a high cost of manufacture and repair and significantly limits the versatility of the torch tips for adapting the tips to various uses. Many of the prior art torch tip units have also been difficult or impossible to adjust in size and configuration for various types of jobs.

Accordingly, it is an object of the present invention to provide a segmental torch tip that is versatile and adaptable for various uses.

Another object is to provide a segmental torch tip which is easily and inexpensively manufactured and maintained.

A further object of the invention is the provision of a segmental torch tip for mixing and combustion of gases wherein the tip is readily adjustable in size and configuration.

Still another object is to provide a segmental torch tip wherein the flame can be easily and accurately controlled and directed.

Yet another object of the present invention is the provision of a segmentaltorch tip for mixing and combustion of gases wherein the size of the tip can be readily changed to accommodate various types of jobs.

Additional objects and advantages of the invention will be set forth in part in the description which follows and in part will be obvious from the description, or rnay be learned by practice of the invention. The objects and advantages are realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

To achieve these and other objects the present invention provides a segmental torch tip, which as embodied and broadly described, comprises a main segment having first and second open-ended gas passages, gas input passages in fluid communication with the first and second open-ended gas passages for admitting gases into the torch tip, a first plurality of gas jet holes in fluid communication with the first gas passage, a second plurality of gas jet holes in fluid communication with the second gas passage and adjacent the first plurality of gas jet holes for mixing and combustion of the gases; additional segments positioned adjacent the main segment and each addition segment having first and second gas openings with one closed end and one open end and in respective fluid communication with the first and second open-ended gas passages of the main segment, a first plurality of gas jet apertures in fluid communication with the first gas opening of each additional segment; a second plurality of gas jet apertures in fluid communication with the second gas opening of each additional segment and adjacent the first plurality of jet apertures for mixing and combustion of the gases; seat means located at the ends of the first and second open-ended gas passages of the main segment and at the open ends of the first and second gas openings of the additional segments; sealing means positioned adjacent the seat means for providing fluid-tight connections between the first open-ended gas passage in the main segment and the first gas openings in the additional segments and between .the second openended gas passage in the main segment and the second gas openings in the additional segments; and means positioned to hold the torch tip segments together in fluidsealing relationship.

Preferably, each of the segments is provided with a plurality of plug-receiving bores in fluid communication with the first and second open-ended gas passages of the main segment and with the first and second gas openings of the additional segment, and a plug is preferably adjustably positioned within each of the plug-receiving bores. The first plurality of gas jet holes in the main segment and the first plurality of gas jet apertures in the additional segments are respectively located within the plugs. Each of the plugs is preferably cylindrical in shape, and the first plurality of gas jet holes in each plug of the main segment are oriented parallel to each other but in non-parallel relationship with respect to the cylindrical axis of the plug. Similarly, the first plurality of gas jet apertures in each plug of the additional segments are oriented parallel to each other but in non-parallel relationship with respect to the cylindrical axis of the plug. The plugs are also preferably threadedly positioned within the plugreceiving bores so that the orientation of the first plurality of jet holes with respect to the second plurality of jet holes in the main segment and of the first plurality of jet apertures with respect to the second plurality of jet apertures in the additional segments can be changed by screwing or unscrewing the plugs.

The second plurality of jet holes in the main segment and the second plurality of jet apertures in the additional segments are preferably oriented in non-parallel relationship with the cylindrical axes of the plugs, and

the second plurality of jet holes and the second plurality of jet apertures are preferably positioned around the plugs and are angled toward the plugs to facilitate mixing and combustion of the gases.

In accordance with the invention, the sealing means includes compression rings in fluid-sealing engagement with the seat means and gaskets positioned in fluidsealing relationship between each of the torch tip segments. 7

Each of the segments also preferably includes cooling passages therein in fluid communication with each cooling passage in each other torch tip segment.

ln oneembodiment of the invention, each of the first plurality of jet holes in the main segment is positioned in concentric relationship with a respective one of the second plurality of jet holes, and each of the first plurality of jet apertures in the additional segments is positioned in concentric relationship with a respective one of the second plurality of jet apertures.

In another embodiment of the invention, one cross section of the main segment and of each of the addithe line 8-8 of FIG. 7

tional segments is preferably trapezoidal whereby the segmental torch tip assembly is shaped as an arc to enable concentration of heat in a predetermined area as a result of combustion of the gases.

Thus, the present invention provides for a segmental torch tip for mixing and combustion of gases that is inexpensive to manufacture and maintain and which is extremely versatile in use. The various gas passages and coolant passages are drilled out of solid blocks of material so that the torch tip is easy and inexpensive to manufacture and maintain.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the invention.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate examples of preferred embodiments of the invention and, together with the description, serve to explain the principles of the invention.

FIG. 1 is an exploded'perspective view of one embodiment of the invention with portions eliminated for clarity;

FIG. 2 is a plan viewof a main segment or segment block of the invention;

FIG. 3 is a section of the main segment or segment block taken on the line 3-3 of FIG. 2 looking in the direction of the arrows;

FIG. 4 is a section of the torch tip taken on the line 4--4 of FIG. 2 looking in the direction of-the arrows;

FIG. 5 is a diagrammatic perspective view of the torch tip of this invention showing concentration of heat in a small area;

FIG. 6 is a diagrammatic perspective view of another embodiment of the invention showing concentration of heat within a small area;

FIG. 7 is a diagrammatic perspective view of another embodiment of the invention and illustrates the main segment or segment block; and

FIG. 8 shows a section of the main segment taken on looking in the direction of the arrows. I a

With reference now to the drawings, wherein like reference characters designate like or corresponding parts throughout the several views, there is shown in FIG. 1 a segmental torch tip for mixing and combustion of gases in accordance with one embodiment of this invention.

A main segment or segment block 10 of suitable metal or other material is provided having a first openended gas passage 12 and a second open-ended gas passage 14 extending substantially parallel with the first open-ended passage. A first gas input passage 16 is located in fluid communication with first open-ended gas passage 12 and with the exterior of main segment 10 for receiving gas from an external source (not shown). A second gas input passage 18 is located in fluid communication with second open-ended gas passage 14 and with the exterior of main segment 10 for receiving another gas from an external source (not shown).

A first gas supply passage 20 is also provided in fluid communication with first open-ended gas passage 12, and a first plurality of gas jet holes 22 are located in fluid communication with first gas supply passage 20 and with the exterior of main segment 10 for permitting gas entering through first input passage 16 to escape from the segment.

A second gas supply passage 24 is also located within main segment 10 in fluid communication with second open-ended gas passage 14 and with second gas input passage 18. A second plurality of gas jet holes 26 are located in fluid communication with second gas supply passage 24 and are positioned adjacent to the first plurality of gas jet holes 22 to provide for mixing and combustion of gases emitted from the first and second plurality of jet holes.

Main segment 10 of the torch tip assembly also includes a plurality of bolt holes 28 extending through the main segment. These holes receive bolts 70 (FIG. 5) for holding the torch tip segments together. In addition, main segment 10 may include cooling passages 30 in fluid communication with each cooling passage in each other torch tip segment for permitting water or other cooling fluid to pass through the assembly during operation.

Two additional or end segments 32 of suitable metal or other material are located on opposite sides of main segment 10, and each end segment has a first gas opening 34 with one closed end and one open end in fluid communication with first open-ended gas passage 12 of the main segment. Each end segment 32 also has a second gas opening 36 therein with one closed end and one open end in fluid communication with second open-ended gas passage 14 of main segment l0.

A first gas supply bore 38 is located in each end segment and in fluid communication with first gas opening 34. The gas supply bore 38 is illustrated in FIG. 1 in only one of the end segments 32 for clarity of illustration only, and in the actual embodiment of the invention first gas supply bore 38 is located in each end segment 32.

A first plurality of gas jet apertures 40 are located in fluid communication with first gas supply bore 38 and with the exterior of each end segment 32 for permitting gas entering through input passage 16 of the main segment to escape from the end segments for combustion.

A second gas supply bore 42 is positioned in fluid communication with second opening 36 and within each of the end segments 32 for supplying gas entering through input passage 18 of the main segment to a second plurality of gas jet apertures 44. Jet apertures 44 are also positioned adjacent to the first plurality of gas jet apertures 40 in each end segment 32 in order to provide for mixing and combustion of gases.

Each end segment is also provided with a plurality of bolt passages 46 that extend through each end segment for receiving bolts (FIG. 5) to hold the torch tip segments together.

It should be understood that the second gas supply bore 42 and the second plurality of gas jet apertures 44 are located in each end segment 32 and are illustrated in FIG. 1 in only one of the end segments for clarity of illustration.

In addition to end segments 32, the torch tip assembly of this invention may include one or more intermediate segments 48 of suitable metal or other material having first and second open-ended gas bores 50 in respective fluid communication with first and second open-ended gas passages 12 and 14 of main segment 10 and with first and second gas openings 34 and 36 of the end or additional segments 32.

As in the other segments, the intermediate segments each include a first plurality of gas jet bores 52 in fluid communication with a first one of gas bores 50 and a second plurality of gas jet bores 54 in fluid communication with a second one of gas bores 50 and adjacent the first plurality of gas jet bores 52 for mixing and combustion of the gases. Each of the intermediate segments 48 also includes a plurality of bolt bores 56 for receiving bolts 70 (FIG. 5). These bolts along with nuts 72 hold the torch tip segments together during operation of the assembly. Each of the intermediate segments also preferably includes a plurality of cooling passages 30 in fluid communication with respective cooling passages in each of the other torch tip segments for enabling cooling of the assembly with water or other fluid.

' Seat means 58 are also located at the open ends of first and second gas passages 12 and 14 of main segment 10, at the open ends of first and second gas openings 34 and 36 of end segments 32, and at the open ends of first and second gas bores 50 of intermediate segments 48. As here embodied, the seat means are compression fitting seats, and sealing means 60, preferably compression fittings, are positioned in fluid-sealing relationship with seat means 58 for providing fluid-tight connections between each of the torch tip segments.

In accordance with this invention, each of the torch tip segments is provided with a plurality of plug-receiving bores 62 in respective fluid communication with first and second open-ended gas passages 12 and 14 in main segment 10, with first and second gas openings 34 and 36 in end segments 32 and with first and second open-ended gas bores 50 in intermediate segments 48. Each of the plug-receiving bores 62 is provided with a plug 64 adjustably positioned therein, and the first plurality of gas jet holes 22, gas jet apertures 40 and gas jet bores 52 are respectively located within the plugs of main segment 10, end segments 32 and intermediate segments 48.

Each of the plugs 64 is preferably substantially cylindrical in shape and gas jet holes 22, jet apertures 40 and jet bores 52 in the plugs are oriented in parallel relationship to each other in each plug but in non-parallel relationship with respect to the cylindrical axis of each plug to permit adjustment of the flame direction, as illustrated in FIG. 5.

Each of the plugs is also provided with threads 66, and each of the plug-receiving bores 62 is threaded so that the orientation of the plugs within the plug-receiving bores can be adjusted by screwing or unscrewing the plugs. This adjustment of the plugs results in redirection of the flame emanating from the torch tip assembly, and the assembly is extremely versatile in providing various flame configurations by means of apertures 44, and jet bores 54 are also positioned around plugs 64 and are angled toward the plugs to facilitate mixing and combustion of the gases.

Although the torch tip of this invention is specifically described and illustrated with regard to external mixing of gases, it should be understood that the concepts of this invention are equally applicable to the internal mixture of gases in torch tip assemblies.

In operation of the embodiment of this invention illustrated in FIGS. 1-5, the various segments of the assembly are first connected together in fluid-tight relationship. Gaskets 68 of asbestos or other suitable material are positioned between each adjacent segment and compression fittings 60 are positioned in seats 58. Similarly, compression fittings '74 are positioned in seats 76 of cooling passages 30 to seal these passages in fluid-tight relationship. Bolts 70 are positioned within bolt holes 28 of main segment 10 and through bolt passages 46 andbolt bore 56 of the other segments to permit nuts 72 to be tightened down on the bolts and to force the torch tip segments together in fluid-tight relationship.

Plugs 64 are then rotatably adjusted within plugreceiving bores 62 by means of a screwdriver or other instrument inserted into grooves 65 within each of the plugs 64. A gas from a first source (not shown) is then permitted to enter through first input passage 16 of main segment 10. The gas passes into first gas passage 12 and into the intermediate and end segments via one of the open-ended gas bores 50 within each intermediate segment 48 and via first gas openings 34 in each of the end segments. The gas then passes upwardly within each segment and through gas jet holes 22 in the main segment, gas jet apertures 40 in the end segments and gas jet bores 52 in the intermediate segments.

Simultaneously with the introduction of gas into the first input passage 16, a second gas is fed into second input passage 18 of the main segment. This gas passes into and through second gas passage 14 of the main segment and into the intermediate and end segments via an open-ended gas bore 50 in each intermediate segment 48 and via second gas openings 36 in end segments 32. This gas then passes upwardly within each segment and out through gas jet holes 26 in the main segment, gas jet apertures 44 in the end segments and gas jet bores 54 in the intermediate segments.

The gases then mix with one another as they exit from the torch tip assembly, and combustion occurs to create the desired heat. Commonly, hydrogen and oxygen are used as the two gases but other gases can also be used.

As can be appreciated, the number of plugs 64 within each segment can be increased from the two illustrated. Thus, the torch tip can be made as wide as desired and additional input passages can be provided in the main segment. In addition, as many intermediate segments 48 as desired can be utilized so that the tip can be made as long as desirable. More than two different types of gases can also be used, andthis may be particularly desirable when the segments are provided with more than two plugs 64 in each segment. Thus, where each segment has three or more plugs 64 therein, more than two types of gases can readily be used.

The torch tip embodiment described permits easy direction of the flame by rotating plugs 64, and the size and nature of the flame can also be readily adjusted by extending the length and width of the torch tip assembly.

In an alternative embodiment of this invention, each of the torch tip segments is shaped so that one cross section thereof is trapezoidal. This permits the assembly to be shaped as an arc, as illustrated in FIG. 6, to further enhance concentration of heat in a predetermined area as a result of combustion of gases emanating from the torch tip assembly.

In adjusting the direction and concentration of the flame emanating from the torch tip assembly, the total number of segments used in the assembly and the angle of the gas jets drilled into each of the plugs 64 determines the versatility of the assembly. Although the jets may be drilled at various angles to accomplish various types of jobs, the jets are preferably drilled at an angle of with respect to the axes of the plugs, and the gas jets surrounding each of the plugs 64 may be drilled at any desired angle with respect to the axes of the plugs to achieve the optimum combustion of gases.

Another embodiment of the invention is illustrated in FIGS. 7 and 8 wherein main segment 10 only is illustrated for clarity of understanding. As in the embodiments illustrated in FIGS. l-6, a first open-ended gas passage 12 is provided in fluid communication with a first input gas passage 16 connected to a source of gas (not shown). A second open-ended gas passage 14 is also provided in fluid communication with a second gas input passage 18. A plurality of gas supply passages 20' are located in fluid communication with open-ended gas passage 12 and a first plurality of gas jet holes 22 are positioned in fluid communication with supply passages 20'.

Similarly, a second plurality of gas supply passages 24 are in fluid communication with second openended gas passage 14 and with a second plurality of gas jet holes 26'. Bolt holes 28 and cooling passages 30 are also provided.

The additional segments of the torch tip assembly embodiment of FIGS. 7 and 8 are not illustrated because they are identical with main segment 10 with the exception that gas input passages 16 and 18 are provided only in main segment 10 and the gas passages of the end segments corresponding with passages 12 and 14 of the main segment are provided with one closed end and one open end as in the embodiment described and illustrated in FIGS. l-6.

In addition, the embodiment of the invention illustrated in FIGS. 7 and 8 is characterized by having the first plurality of jet holes 22' in concentric relationship with respective ones of the second plurality of jet holes 26'. As illustrated, the first plurality of jet holes 22 are located within the respective ones of the second plurality of jet holes 26' to permit a greater number of gas exits to be placed in a specified area as compared with previous torch tip embodiments that have placed the gas apertures side-by-side.

As best illustrated in FIG. 8, tube-receiving holes 78 extend between first and second passages 20 and 24, and the first plurality of jet holes 22' are comprised of tubes positioned within tube-receiving holes 78 and extending concentrically through the second plurality of jet holes 26. Each of the additional segments (not shown) is constructed in a similar manner.

The tube-receiving holes 78 are also preferably threaded, and one end of each of the tubes 22' is also threaded to engage the threads locatedin holes 78. This not only enables tubes 22' to be selectively located in concentric relationship with jet holes 26', but permits tubes 22' to be easily removed and replaced as necessary.

Thus, this invention provides for a new segmental torch tip for mixing and combustion of gases which is extremely versatile in operation and'which is inexpensive to manufacture and maintain. Although the torch tip of this invention has been described and illustrated with respect to the combination and combustion of two gases, it should be understood that this invention encompasses torch tip assemblies thatmay be used to combine more than two gases where appropriate. It should also be understood that this invention is equally applicable to internal mixing of gases aswell as to extemal mixing of gases as described and illustrated.

The invention in its broader aspects is not limited to the specific details shown and described and departures may be made from such details without departing from the principles of the present invention and without sacrificing its chief advantages.

What is claimed is:

l. A segmental torch tip for mixing and combustion of gases comprising:

a main segment having a first open-ended gas passage, a second open-ended gas passage substantially parallel with said first open-ended passage, a first gas input passage in fluid communication with the first open-ended passage and with the exterior of the main segment, a second gas input passage in fluid communication with the second openvended passage and with the exterior of the main segment, a first gas supply passage in fluid communication with said first open-ended passage, a first plurality of gas jet holes in fluid communication with the first supply passage and with the exterior of the main segment, a second gas supply passage in fluid communication with said second open-ended passage, a second plurality of gas jet holes in fluid communication with the second supply passage and positioned adjacent said first plurality of jet holes to provide for mixing and combustion of gases emitted from the first and second plurality of jet holes, and a plurality of bolt holes extending through the main segment for receiving bolts to hold the torch tip segments together;

two end segments positioned on opposite sides of said main segment, each end segment having a first gas opening with one closed end and one open end in fluid communication with said first open-ended passage of the main segment, a second gas opening with one closed end and one open end in fluid communication with said second open-ended passage of the main segment, a first gas supply bore in fluid communication with said first opening, a first plurality of gas jet apertures in fluid communication with the first supply bore and with the exterior of the end segment, a second gas supply bore in fluid communication with said second opening, a second plurality of gas jet apertures in fluid communication with the second supply bore and positioned adjacent said first plurality of jet apertures to provide for mixing and combustion of gases emitted from the first and second plurality of jet apertures, and a plurality of bolt passages extending through each end segment for receiving bolts to hold the torch tip segments together;

seat means located at the open ends of said first and second open-ended gas passages and at the open ends of said first and second gas openings; and

sealing means positioned adjacent said seat means for providing fluid-tight connections between said first open-ended gas passage in said main segment and said first gas openings in said end segments and between said second open-ended gas passage in said main segments and said second gas openings in said end segments.

2. A segmental torch tip for mixing and combustion of gases, comprising:

a main segment having first and second open-ended passages, inlet passages in fluid communication with said first and second open-ended passages for admitting gases into the torch tip, a first plurality of jet holes in fluid communication with said first passage, a second plurality of jet holes in fluid communication with said second passage and adjacent the first plurality of jet holes for mixing and combustion of the gases;

additional segments positioned adjacent the main segment and each additional segment having first and second openings with one closed end and one open end in respective fluid communication with the first and second open-ended passages. of the main segment, a first plurality of jet apertures in fluid communication with said first opening, a second plurality of jet apertures in fluid communication with said second opening and adjacent the first plurality of jet apertures for mixing and combustion of the gases;

seat means located at the open ends of said first and second open-ended passages and at the open ends of said first and second openings; and

sealing means positioned adjacent said seat means for providing fluid-tight connections between said first open-ended passage in said main segment and said first openings in said additional segments and between said second open-ended passage in said main segment and said second openings in said additional segments; and

means positioned to hold the torch tip segments together in fluid-sealing relationship.

3. A segmental torch tip as in claim 2 wherein each of said segments is provided with a plurality of plugreceiving bores in fluid communication with said first and second open-ended passages and with said first and second openings and further including a plug adjustably positioned within each of said plug-receiving bores, said first plurality of jet holes and jet apertures being respectively located within the plugs.

4. A segmental torch tip as in claim 3 wherein each of the plugs is substantially cylindrical in shape and wherein the first plurality of jet holes in each plug are oriented parallel to each other but in non-parallel relationship with respect to the cylindrical axis of the plug and wherein the first plurality of jet apertures in each plug are oriented parallel to each other but in nonparallel relationship with respect to the cylindrical axis of the plug.

5. A segmental torch tip as in claim 4 wherein the plugs are threadedly positioned within the plug-receiving bores so that the orientation of the first plurality of jet holes and jet apertures with respect to the second plurality of jet holes and jet apertures can be changed by screwing or unscrewing the plugs.

6. A segmental torch tip as in claim 5 wherein the second plurality of jet holes in the main segment and the second plurality of jet apertures in the additional segments are oriented in non-parallel relationship with the cylindrical axes of the plugs.

7. A segmental torch tip as in claim 6 wherein the second plurality of jet holes and the second plurality of jet apertures are positioned around the plugs and are angled toward the plugs to facilitate mixing and combustion of the gases.

8. A segmental torch tip as in claim 2 wherein the sealing means includes:

compression rings in fluid-sealing engagement with said seat means; and

gaskets positioned in fluid-sealing relationship between each of said torch tip segments.

9. A segmental torch tip as in claim 2 further includ ing intermediate segments between said main segment and at least one of said additional segments, each of said intermediate segments having first and second open-ended bores in respective fluid communication with the first and second open-ended passages of the main segment and with the first and second openings of the additional segments, a first plurality of jet bores in fluid communication with said first bore, a second plurality of jet bores in fluid communication with said second bore and adjacent the first plurality of jet bores for mixing and combustion of the gases, and a plurality of bolt bores for receiving bolts to hold together the torch tip segments; and

seat means located at the open ends of said first and second open-ended bores.

10. A segmental torch tip as in claim 9 wherein each of the torch tip segments includes cooling passages therein in fluid communication with each cooling passage in each other torch tip segment.

11. A segmental torch tip as in claim 2 wherein each of the first plurality of jet holes in the main segment is positioned in concentric relationship with a respective one of the second plurality of jet holes and wherein each of the first plurality of jet apertures in the additional segments is positioned in concentric relationship with a respective one of the second plurality of jet apertures.

12. A segmental torch tip as in claim 11 wherein the main segment further includes tube-receiving holes extending between the first and second open-ended passages and wherein the first plurality of jet holes includes tubes positioned within the tube-receiving holes and extending concentrically through the second plurality of jet holes.

13. A segmental torch tip as in claim 12 wherein each of the additional segments further includes tubereceiving holes extending between the first and second openings and wherein the first plurality of jet apertures include tubes positioned within said last-mentioned tube-receiving holes and extending concentrically through the second plurality of jet apertures.

14. A segmental torch tip as in claim 13 wherein the tube-receiving holes are threaded and wherein the tubes are threadedly held within said tube-receiving holes. 

1. A segmental torch tip for mixing and combustion of gases comprising: a main segment having a first open-ended gas passage, a second open-ended gas passage substantially parallel with said first open-ended passage, a first gas input passage in fluid communication with the first open-ended passage and with the exterior of the main segment, a second gas input passage in fluid communication with the second open-ended passage and with the exterior of the main segment, a first gas supply passage in fluid communication with said first open-ended passage, a first plurality of gas jet holes in fluid communication with the first supply passage and with the exterior of the main segment, a second gas supply passage in fluid communication with said second open-ended passage, a second plurality of gas jet holes in fluid communication with the second supply passage and positioned adjacent said first plurality of jet holes to provide for mixing and combustion of gases emitted from the first and second plurality of jet holes, and a plurality of bolt holes extending through the main segment for receiving bolts to hold the torch tip segments together; two end segments positioned on opposite sides of said main segment, each end segment having a first gas opening with one closed end and one open end in fluid communication with said first open-ended passage of the main segment, a second gas opening with one closed end and one open end in fluid communication with said second open-ended passage of the main segment, a first gas supply bore in fluid communication with said first opening, a first plurality of gas jet apertures in fluid communication with the first supply bore and with the exterior of the end segment, a second gas supply bore in fluid communication with said second opening, a second plurality of gas jet apertures in fluid communication with the second supply bore and positioned adjacent said first plurality of jet apertures to provide for mixing and combustion of gases emitted from the first and second plurality of jet apertures, and a plurality of bolt passages extending through each end segment for receiving bolts to hold the torch tip segments togethEr; seat means located at the open ends of said first and second open-ended gas passages and at the open ends of said first and second gas openings; and sealing means positioned adjacent said seat means for providing fluid-tight connections between said first open-ended gas passage in said main segment and said first gas openings in said end segments and between said second open-ended gas passage in said main segments and said second gas openings in said end segments.
 2. A segmental torch tip for mixing and combustion of gases, comprising: a main segment having first and second open-ended passages, inlet passages in fluid communication with said first and second open-ended passages for admitting gases into the torch tip, a first plurality of jet holes in fluid communication with said first passage, a second plurality of jet holes in fluid communication with said second passage and adjacent the first plurality of jet holes for mixing and combustion of the gases; additional segments positioned adjacent the main segment and each additional segment having first and second openings with one closed end and one open end in respective fluid communication with the first and second open-ended passages of the main segment, a first plurality of jet apertures in fluid communication with said first opening, a second plurality of jet apertures in fluid communication with said second opening and adjacent the first plurality of jet apertures for mixing and combustion of the gases; seat means located at the open ends of said first and second open-ended passages and at the open ends of said first and second openings; and sealing means positioned adjacent said seat means for providing fluid-tight connections between said first open-ended passage in said main segment and said first openings in said additional segments and between said second open-ended passage in said main segment and said second openings in said additional segments; and means positioned to hold the torch tip segments together in fluid-sealing relationship.
 3. A segmental torch tip as in claim 2 wherein each of said segments is provided with a plurality of plug-receiving bores in fluid communication with said first and second open-ended passages and with said first and second openings and further including a plug adjustably positioned within each of said plug-receiving bores, said first plurality of jet holes and jet apertures being respectively located within the plugs.
 4. A segmental torch tip as in claim 3 wherein each of the plugs is substantially cylindrical in shape and wherein the first plurality of jet holes in each plug are oriented parallel to each other but in non-parallel relationship with respect to the cylindrical axis of the plug and wherein the first plurality of jet apertures in each plug are oriented parallel to each other but in non-parallel relationship with respect to the cylindrical axis of the plug.
 5. A segmental torch tip as in claim 4 wherein the plugs are threadedly positioned within the plug-receiving bores so that the orientation of the first plurality of jet holes and jet apertures with respect to the second plurality of jet holes and jet apertures can be changed by screwing or unscrewing the plugs.
 6. A segmental torch tip as in claim 5 wherein the second plurality of jet holes in the main segment and the second plurality of jet apertures in the additional segments are oriented in non-parallel relationship with the cylindrical axes of the plugs.
 7. A segmental torch tip as in claim 6 wherein the second plurality of jet holes and the second plurality of jet apertures are positioned around the plugs and are angled toward the plugs to facilitate mixing and combustion of the gases.
 8. A segmental torch tip as in claim 2 wherein the sealing means includes: compression rings in fluid-sealing engagement with said seat means; and gaskets positioned in fluid-sealing relationship between each of said torch tip segments.
 9. A segmental torch tip as in claim 2 further including intermediate segments between said main segment and at least one of said additional segments, each of said intermediate segments having first and second open-ended bores in respective fluid communication with the first and second open-ended passages of the main segment and with the first and second openings of the additional segments, a first plurality of jet bores in fluid communication with said first bore, a second plurality of jet bores in fluid communication with said second bore and adjacent the first plurality of jet bores for mixing and combustion of the gases, and a plurality of bolt bores for receiving bolts to hold together the torch tip segments; and seat means located at the open ends of said first and second open-ended bores.
 10. A segmental torch tip as in claim 9 wherein each of the torch tip segments includes cooling passages therein in fluid communication with each cooling passage in each other torch tip segment.
 11. A segmental torch tip as in claim 2 wherein each of the first plurality of jet holes in the main segment is positioned in concentric relationship with a respective one of the second plurality of jet holes and wherein each of the first plurality of jet apertures in the additional segments is positioned in concentric relationship with a respective one of the second plurality of jet apertures.
 12. A segmental torch tip as in claim 11 wherein the main segment further includes tube-receiving holes extending between the first and second open-ended passages and wherein the first plurality of jet holes includes tubes positioned within the tube-receiving holes and extending concentrically through the second plurality of jet holes.
 13. A segmental torch tip as in claim 12 wherein each of the additional segments further includes tube-receiving holes extending between the first and second openings and wherein the first plurality of jet apertures include tubes positioned within said last-mentioned tube-receiving holes and extending concentrically through the second plurality of jet apertures.
 14. A segmental torch tip as in claim 13 wherein the tube-receiving holes are threaded and wherein the tubes are threadedly held within said tube-receiving holes.
 15. A segmental torch tip as in claim 2 wherein one cross section of the main segment and of each of the additional segments is trapezoidal whereby the segmental torch tip is shaped as an arc to enable concentration of heat in a predetermined area as a result of combustion of the gases. 